33. Doing multi-pass HTTP authentication on a non-default port does not work.

33. Doing multi-pass HTTP authentication on a non-default port does not work.
  This happens because the multi-pass code abuses the redirect following code
  for doing multiple requests, and when we following redirects to an absolute
  URL we must use the newly specified port and not the one specified in the
  original URL. A proper fix to this would need to separate the negotiation
  "redirect" from an actual redirect.